@article{f0f488e039b84e53b3d60af42637566f,
title = "Effect of moisture content on calculated dielectric properties of asphalt concrete pavements from ground-penetrating radar measurements",
abstract = "Moisture presence in asphalt concrete (AC) pavement is a major cause of damage to the pavement. In recent decades, an increasing need exists for non-destructive detection and monitoring of the moisture content in AC pavement. This paper provides a simulated approach to quantify the effect of internal moisture content on AC pavement dielectric properties using ground-penetrating radar (GPR). A heterogeneous numerical model was developed to simulate AC pavement with internal moisture at various saturation levels. The numerical model was validated using GPR surveys on cold-in-place recycling treated pavements. An empirical formula was derived from the simulation to correlate the dielectric constant with the moisture content for non-dry AC pavement. The results validated the proposed model and, hence, demonstrated the ability of GPR to monitor moisture variation in AC pavements.",
keywords = "Asphalt concrete pavement, Finite-different time-domain simulation, Ground-penetrating radar, Moisture content, Non-destructive testing",
author = "Qingqing Cao and Al-Qadi, {Imad L.}",
note = "Funding Information: The authors are representatives of the Illinois Center for Transportation (ICT). The contents of this paper reflect the view of the authors, who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official view or policies of ICT. This paper does not constitute a standard, specifications, or regulations. This publication is based on the results conducted in cooperation with Illinois Center for Transportation (ICT), Illinois Department of Transportation (IDOT), U.S. Department of Transportation, and Federal Highway Administration. The authors would like to acknowledge the assistance provided by many individuals including John Senger, TRP chair, Steve Worsfold and Ron Wagoner, TRP members, Jason Wielinski from Heritage Research Group, Greg Renshaw and Uthman M. Ali, ICT?s senior research engineers, along with Siqi Wang, Lama Abufares, Punit Singhvi, Javier Garc?a Mainieri, and Jos? Julian Rivera-Perez?all of whom are University of Illinois at Urbana-Champaign graduate students. Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",
year = "2022",
month = jan,
day = "1",
doi = "10.3390/rs14010034",
language = "English (US)",
volume = "14",
journal = "Remote Sensing",
issn = "2072-4292",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "1",
}